Pretty simple so far. Use the mouse to rotate your shield around the planet to protect it from incoming asteroids. Each hit that the shield takes reduces its size a little bit. If an asteroid makes it to the planet the shield reduces by a larger amount. Your shield will never go below a certain minimum size. It also regenerates continually, so it will eventually get back up to size if it has a long enough rest. I will also go back to maximum size between levels.

I am thinking of adding a laser type canon and a bonus level that occurs every 5 levels to add a bit of variety. I have about 1500 bytes left, so I should be able to fit that in.

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